Arizen Bio Labs

Arizen Bio Labs is a US-based research-peptide supplier whose strongest signal is its lab work: public, batch-linked Janoshik COAs on exactly the compounds buyers most need verified. We pulled and confirmed two genuine certificates from real samples — Retatrutide at 99.909% (lot JRT120225) and BPC-157 at 99.5% (lot J0-2601-004), each recent and with dual-vial quantification. Janoshik is a gold-standard, independently-verifiable lab, so where Arizen publishes a COA the evidence is about as good as it gets.

The remaining limitation is breadth, not quality. The August 25 library showed 11 covered product groups, including NAD+, but TB-500, Ipamorelin, CJC-1295, Cagrilintide, SS-31, and other products still had no public report. The FAQ states that coverage is not universal, and all published testing comes from one lab. Trustpilot listed 4.8/5 from 38 reviews. Standard shipping is stated as three to five business days after one to two business days of processing; $24.99 express is stated as one to two business days. The guarantee covers damaged, defective, or not-as-described products for 30 days, while non-defective items cannot be returned. In July 2026, PeptidePrices spoke directly with ownership and came away with materially greater confidence in the operator, responsiveness, and transparency. Card + Zelle checkout; 10%-off reader code PEPTIDEP10.